Module still shown

Module still shown

Hello,

I have a question. I have a module that I want to show when a special group of registered people are logged in. I installed metamod and mad the following line; if ( $user->usertype == "Werkgevers" ) return 249; (werkgevers is dutch name of group). I have the module 249 set on registered and the metamod module as well. When I am logging in as a registerd person of an other group I still get the module. Can someone tell me what I am doing wrong or can someone tell me in easy words how to set this up.